The Pyrex A 5581 25ml Volumetric Flat Bottom Vintage Glass Flask is a high-quality laboratory flask made by the trusted brand Pyrex. This flask is designed for precise measurements with its volumetric markings, making it ideal for scientific experiments and research. Crafted from durable glass in the United States, this vintage flask is a reliable and essential piece of lab equipment for various industries. Its flat bottom design allows for easy cleaning and accurate pouring, making it a valuable addition to any laboratory. 4 inches tall and 1.5 ” base width. Also popular as a mini vase. Excellent condition.